My Padfone Infinity purchased in Feb (CNY sale) has now gone in to the service centre 4 times in quick succession. Was a great price, but I've been without the phone for almost half that time.
- recent apps key stopped working, and bottom region of touchscreen had erratic behaviour.
- got it back after about 2 weeks. "replaced motherboard" they said.
touchscreen and recent apps key seemed to work but haptic feedback was different. realised the next day when I tried to make a call that the receiver had no sound. sent back in the day after. they did the self test on the phone and there was a tone, but tested and verified there was no sound when making/receiving calls.
- ready for collection a few days later. upon getting my hands on the phone, immediately made a call. exact same problem. sent in for service again without even leaving the service centre.
- after about a week, collected the phone. tested receiver working. "receiver was not connected" previously

. when trying to insert memory card, realised there were severe scratch marks and a chip on the sides where previously there were only slight scratches. they said it was recorded that there were "scratches on the sides" when they took the unit in. apparently once there is a scratch recorded they take no responsibility for any further damage.
Realised later there was erratic behaviour on the bottom right region of the touchscreen again. Sent it back in the next day (last week). Thought I'd been patient and reasonable enough, and requested a new replacement unit this time. Still waiting to hear from them.